Stator assembly

Abstract

A stator assembly for driving a rotor of an electrical planar motor includes a first arrangement of longitudinal stator layers and a second arrangement of oblique stator layers. The longitudinal stator layers comprise first coil conductors and the oblique stator layers comprise second coil conductors. The second coil conductors interact with second drive magnets to drive the rotor in a first direction, and the first coil conductors interact with first drive magnets to drive the rotor in a second direction, different from the first direction. The longitudinal and oblique stator layers are arranged on top of one another in a third direction, perpendicular to the first and second directions, where the first arrangement of longitudinal stator layers and the second arrangement of oblique stator layers have a shared central plane, each being symmetrically arranged with regard to the shared central plane, in the third direction.

The invention claimed is: 
     
       1. A stator assembly for driving a rotor of an electrical planar motor, wherein the stator assembly comprises:
 a first arrangement of longitudinal stator layers; and 
 a second arrangement of oblique stator layers; 
 wherein the longitudinal stator layers comprise first coil conductors and wherein the oblique stator layers comprise second coil conductors, 
 wherein the second coil conductors are configured to interact with second drive magnets of the rotor in order to drive the rotor in a first direction, 
 wherein the first coil conductors are configured to interact with the first drive magnets of the rotor in order to drive the rotor in a second direction differing from the first direction, 
 wherein the longitudinal stator layers and the oblique stator layers are arranged on top of one another in a third direction oriented perpendicularly to the first and second direction, and 
 wherein the longitudinal stator layers and the oblique stator layers have the same mean distance from a stator surface of the stator assembly in the third direction. 
 
     
     
       2. The stator assembly of  claim 1 ,
 wherein the first arrangement of longitudinal stator layers and the second arrangement of oblique stator layers comprise a shared central plane, and 
 wherein the longitudinal stator layers and the oblique stator layers are each arranged symmetrically to the shared central plane in the third direction. 
 
     
     
       3. The stator assembly of  claim 1 , wherein a first total number of longitudinal stator layers and a second total number of oblique stator layers are equal. 
     
     
       4. The stator assembly of  claim 1 , wherein the first arrangement comprises six longitudinal stator layers and the second arrangement comprises six oblique stator layers. 
     
     
       5. The stator assembly of  claim 1 ,
 wherein a topmost stator layer of the stator assembly and a lowermost stator layer of the stator assembly are each configured as a longitudinal stator layer having first coil conductors, and 
 wherein a second topmost stator layer of the stator assembly and a second lowermost stator layer of the stator assembly are each configured as oblique stator layers having second coil conductors. 
 
     
     
       6. The stator assembly of  claim 1 ,
 wherein the stator assembly comprises interior layers arranged within the stator assembly, and 
 wherein the interior layers of the stator assembly are each alternatingly configured as two adjacent oblique stator layers and as two adjacent longitudinal stator layers. 
 
     
     
       7. The stator assembly of  claim 1 ,
 wherein the first coil conductors are configured as conductor strips having an elongated embodiment extending along the first direction, and 
 wherein the second coil conductors are configured as conductor strips having an elongated embodiment extending along the second direction. 
 
     
     
       8. The stator assembly of  claim 1 , wherein the stator assembly is configured as a multi-layer circuit board. 
     
     
       9. The stator assembly of  claim 1 ,
 wherein the first coil conductors of the longitudinal stator layers extending in an elongated manner in the first direction and the second coil conductors of the oblique stator layers extending in an elongated manner in the second direction, and 
 wherein the first and second directions are oriented perpendicularly with regard to each other. 
 
     
     
       10. A stator assembly for driving a rotor of an electrical planar motor, wherein the stator assembly comprises:
 a first arrangement of longitudinal stator layers and a second arrangement of oblique stator layers, 
 wherein the longitudinal stator layers comprise first coil conductors and wherein the oblique stator layers comprise second coil conductors, 
 wherein the second coil conductors are configured to interact with second drive magnets of the rotor in order to drive the rotor in a first direction, 
 wherein the first coil conductors are configured to interact with the first drive magnets of the rotor in order to drive the rotor in a second direction differing from the first direction, 
 wherein the longitudinal stator layers and the oblique stator layers are arranged on top of one another in a third direction oriented perpendicularly to the first and second direction, and 
 wherein the first arrangement of longitudinal stator layers and the second arrangement of oblique stator layers have a shared central plane and the longitudinal stator layers and the oblique stator layers are each symmetrical in the third direction with regard to the shared central plane. 
 
     
     
       11. The stator assembly of  claim 10 , wherein a first total number of longitudinal stator layers and a second total number of oblique stator layers are equal. 
     
     
       12. The stator assembly of  claim 10 , wherein the first arrangement comprises six longitudinal stator layers and the second arrangement comprises six oblique stator layers. 
     
     
       13. The stator assembly of  claim 10 ,
 wherein a topmost stator layer of the stator assembly and a lowermost stator layer of the stator assembly are each configured as a longitudinal stator layer having first coil conductors, and 
 wherein a second topmost stator layer of the stator assembly and a second lowermost stator layer of the stator assembly are each configured as oblique stator layers having second coil conductors. 
 
     
     
       14. The stator assembly of  claim 10 ,
 wherein the stator assembly comprises interior layers arranged within the stator assembly, and 
 wherein the interior layers of the stator assembly are each alternatingly configured as two adjacent oblique stator layers and as two adjacent longitudinal stator layers. 
 
     
     
       15. The stator assembly of  claim 10 , wherein the first coil conductors are configured as conductor strips having an elongated embodiment extending along the first direction and wherein the second coil conductors are configured as conductor strips having an elongated embodiment extending along the second direction. 
     
     
       16. A planar-drive system having a stator module and a rotor, wherein the stator module comprises:
 a module housing and a stator assembly, 
 wherein the stator assembly comprises a first arrangement of longitudinal stator layers and a second arrangement of oblique stator layers, 
 wherein the longitudinal stator layers comprise first coil conductors and wherein the oblique stator layers comprise second coil conductors, 
 wherein the second coil conductors are configured to interact with second drive magnets of the rotor in order to drive the rotor an a first direction, 
 wherein the first coil conductors are configured to interact with first drive magnets of the rotor in order to drive the rotor in a second direction differing from the first direction, 
 wherein the longitudinal stator layers and the oblique stator layers are arranged on top of one another in a third direction oriented perpendicularly to the first and second direction, 
 wherein the stator assembly being arranged above the module housing at an upper side of the stator module and comprising a planar stator surface on the upper side of the stator module, and 
 wherein the rotor is arranged above the stator surface of the stator module in in a floating position over the stator surface. 
 
     
     
       17. The planar-drive system of  claim 16 , wherein the longitudinal stator layers and the oblique stator layers have the same mean distance from a stator surface of the stator assembly in the third direction. 
     
     
       18. The planar-drive system of  claim 16 ,
 wherein the first arrangement of longitudinal stator layers and the second arrangement of oblique stator layers comprise a shared central plane, and 
 wherein the longitudinal stator layers and the oblique stator layers are each arranged symmetrically to the shared central plane in the third direction. 
 
     
     
       19. The planar-drive system of  claim 16 , wherein a first total number of longitudinal stator layers and a second total number of oblique stator layers are equal. 
     
     
       20. The planar-drive system of  claim 1 , wherein the first coil conductors of the longitudinal stator layers extending in an elongated manner in the first direction and the second coil conductors of the oblique stator layers extending in an elongated manner in the second direction, wherein the first and second directions are oriented perpendicularly with regard to each other.